Add 20/14 and 72/20
1st number: 1 6/14, 2nd number: 3 12/20
20/14 + 72/20 is 176/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
20/14 = 20 × 10/14 × 10 = 200/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Add the two like fractions:
200/140 + 504/140 = 200 + 504/140 = 704/140 - 704/140 simplified gives 176/35
- So, 20/14 + 72/20 = 176/35
In mixed form: 51/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/14+72/20 20/28+72/20 20/14+72/40 60/14+72/20 20/42+72/20 20/14+72/60 20/70+72/20 20/98+72/20